Here's a big surprise:

Petrina's Dewey Decimal Section:

545 [Unassigned]

Petrina = 6508941 = 650+894+1 = 1545


Class:
500 Science


Contains:
Math, astronomy, prehistoric life, plants and animals.



What it says about you:
You are fascinated by the world around you, and see it as a puzzle worth exploring. You try to understand how things work and how you can make them better. You might be a nerd.

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Astronomy. Spooky.

Petrina's Dewey Decimal Section:

042 [Unassigned]


Class:
000 Computer Science, Information & General Works


Contains:
Encyclopedias, magazines, journals and books with quotations.



What it says about you:
You are very informative and up to date. You're working on living in the here and now, not the past. You go through a lot of changes. When you make a decision you can be very sure of yourself, maybe even stubborn, but your friends appreciate your honesty and resolve.

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Oh, come on, what other optional number am I going to choose?

Petrina's Dewey Decimal Section:

198 Philosophy of Scandinavia

Petrina's birthday: 12/25/1973 = 1225+1973 = 3198


Class:
100 Philosophy & Psychology


Contains:
Books on metaphysics, logic, ethics and philosophy.



What it says about you:
You're a careful thinker, but your life can be complicated and hard for others to understand at times. You try to explain things and strive to express yourself.

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Ah, now there's a result I'd expect from a program that uses numerology: nonsense.